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Submission #86616

# Submission time Handle Problem Language Result Execution time Memory
86616 2018-11-27T03:49:21 Z 1Khan Divide and conquer (IZhO14_divide) C++14
0 / 100
 153 ms 14404 KB 
// In the name of GOD

#include <bits/stdc++.h>

using namespace std;

#define good exit(0);
#define nl endl
#define ios ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
#define sz(s) (int)s.size()
#define all(s) s.begin(), s.end()
#define pb push_back
#define bb begin()
#define ee end()
#define ff first
#define ss second
#define ll long long
#define db double
#define pii pair<int, int>

const int N = 1e5 + 55;
const int M = 1e9 + 7;

int n, m;
ll a[N], b[N], c[N];
ll ans;
int main(){

     cin >> n;
     for(int i = 1; i <= n; ++i){
          ll q, w, e;
          cin >> q >> w >> e;
          a[i] = a[i - 1] + q;
          b[i] = b[i - 1] + w;
          c[i] = c[i - 1] + e;

     }
     for(int i = 1; i <= n; ++i){
          ans = max(ans, b[i] - b[i - 1]);
          int l = i + 1, r = n;
          while(l <= r){
               int m = (l + r) / 2;
               if(a[m] - a[m - i] <= c[m] - c[i -1]){
                    ans = max(ans, b[m] - b[i - 1]);
                    l = m + 1;
               } else{
                    r = m - 1;
               }
          }
     }
     cout << ans << nl;
     return 0;
}

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 2 ms 468 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 484 KB Output is correct
2 Correct 2 ms 524 KB Output is correct
3 Incorrect 2 ms 524 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 52.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 524 KB Output is correct
2 Correct 18 ms 732 KB Output is correct
3 Correct 14 ms 748 KB Output is correct
4 Correct 64 ms 1712 KB Output is correct
5 Correct 78 ms 2964 KB Output is correct
6 Correct 153 ms 7276 KB Output is correct
7 Correct 145 ms 8980 KB Output is correct
8 Correct 128 ms 10992 KB Output is correct
9 Correct 141 ms 12692 KB Output is correct
10 Incorrect 118 ms 14404 KB Output isn't correct
11 Halted 0 ms 0 KB -